diff --git a/src/intrinsic.c b/src/intrinsic.c
index 26bb56d..4468ede 100644
--- a/src/intrinsic.c
+++ b/src/intrinsic.c
@@ -10,11 +10,11 @@ int omp_get_num_threads (void) {
 
 int omp_get_thread_num (void) {
   //printf("TBI: omp_get_thread_num still doesn't know who I am ... let's say I am 0\n");
-  printf("Called get_thread: \n");
+  //printf("Called get_thread: \n");
   miniomp_thread_t *thread = pthread_getspecific(miniomp_specifickey);
-  printf("Casted getspecific \n");
+  //printf("Casted getspecific \n");
   unsigned int thread_id = thread->id;
-  printf("%d\n", thread_id);
+  //printf("THREAD ID IS %d\n", thread_id);
   return((int)thread_id);
 }
 
diff --git a/src/parallel.c b/src/parallel.c
index 89523ba..45b66dd 100644
--- a/src/parallel.c
+++ b/src/parallel.c
@@ -20,7 +20,7 @@ void miniomp_thread_init(miniomp_thread_t * thread, unsigned int id, void (*fn)
 
 // This is the prototype for the Pthreads starting function
 void worker(void *args) {
-  pthread_key_create(&miniomp_specifickey, NULL);
+  //pthread_key_create(&miniomp_specifickey, NULL);
   miniomp_thread_t *thread = args;
   pthread_setspecific(miniomp_specifickey, thread);
   miniomp_parallel_t *parallel = thread->region;
@@ -28,9 +28,9 @@ void worker(void *args) {
   printf("Thread %d initialized\n", id);
   void (*fn) (void *) = parallel->fn;
   void * data = parallel->fn_data;
-  printf("Thread %d fn and data done\n", id);
+  //printf("Thread %d fn and data done\n", id);
   fn(data);
-  printf("Executed fn in thread %d\n", id);
+  //printf("Executed fn in thread %d\n", id);
 }
 
 void
@@ -41,15 +41,19 @@ GOMP_parallel (void (*fn) (void *), void *data, unsigned num_threads, unsigned i
   miniomp_parallel = malloc(sizeof(miniomp_parallel_t));
   miniomp_parallel->fn = fn;
   miniomp_parallel->fn_data = data;
-  miniomp_parallel->id = 0;  
+  miniomp_parallel->id = 0;
+  pthread_barrier_init(&(miniomp_parallel->barrier), NULL, num_threads);
   pthread_mutex_init(&(miniomp_parallel->mutex), NULL);
+  pthread_key_create(&miniomp_specifickey, NULL);
   for (int i=0; i<num_threads; i++){
     miniomp_thread_init(&miniomp_threads[i], i, worker, miniomp_parallel);
   }
   for (int i=0; i < num_threads; i++){
-    printf("Thread %i arrived to join\n", i);
+    //printf("Thread %i arrived to join\n", i);
     pthread_join(miniomp_threads[i].pthread, NULL);
   }
+  pthread_mutex_destroy(&(miniomp_parallel->mutex));
+  pthread_barrier_destroy(&(miniomp_parallel->barrier));
   free(miniomp_threads);
   free(miniomp_parallel);
 }
diff --git a/src/parallel.h b/src/parallel.h
index a79cfb7..123608a 100644
--- a/src/parallel.h
+++ b/src/parallel.h
@@ -8,6 +8,7 @@ typedef struct {
   void *fn_data;
   unsigned int id;
   pthread_mutex_t mutex;
+  pthread_barrier_t barrier;
     // complete the definition of parallel descriptor
 } miniomp_parallel_t;
 
diff --git a/src/synchronization.c b/src/synchronization.c
index 04f74bb..c94216a 100644
--- a/src/synchronization.c
+++ b/src/synchronization.c
@@ -4,27 +4,36 @@
 pthread_mutex_t miniomp_default_lock;
 
 void GOMP_critical_start (void) {
-  printf("TBI: Entering an unnamed critical, don't know if anyone else is alrady in. I proceed\n");
+  miniomp_thread_t *thread = pthread_getspecific(miniomp_specifickey);
+  pthread_mutex_lock(&(thread->region->mutex));
+  //printf("TBI: Entering an unnamed critical, don't know if anyone else is alrady in. I proceed\n");
 }
 
 void GOMP_critical_end (void) {
-  printf("TBI: Exiting an unnamed critical section. I can not inform anyone else, bye!\n");
+  miniomp_thread_t *thread = pthread_getspecific(miniomp_specifickey);
+  pthread_mutex_unlock(&(thread->region->mutex));
+  //printf("TBI: Exiting an unnamed critical section. I can not inform anyone else, bye!\n");
 }
 
 void GOMP_critical_name_start (void **pptr) {
   pthread_mutex_t * plock = *pptr;
-  printf("TBI: Entering a named critical %p (%p), don't know if anyone else is alrady in. I proceed\n", pptr, plock);
+  pthread_mutex_lock(plock);
+  printf("TBI: Entering a named critical %p (%p)\n", pptr, plock);
   // if plock is NULL it means that the lock associated to the name has not yet been allocated and initialized
 }
 
 void GOMP_critical_name_end (void **pptr) {
   pthread_mutex_t * plock = *pptr;
-  printf("TBI: Exiting a named critical %p (%p), I can not inform anyone else, bye!\n", pptr, plock);
+  pthread_mutex_unlock(plock);
+  printf("TBI: Exiting a named critical %p (%p)\n", pptr, plock);
   // if plock is still NULL something went wrong
 }
 
 pthread_barrier_t miniomp_barrier;
 
 void GOMP_barrier() {
-  printf("TBI: Entering in barrier, but do not know how to wait for the rest. I proceed\n");
+  miniomp_thread_t *thread = pthread_getspecific(miniomp_specifickey);
+  printf("Thread %d waiting for signal", thread->id);
+  pthread_barrier_wait(&(thread->region->barrier));
+  
 }